Feature:1. Switch between half and full helmet with ease using buttons on the sides for versatile conservation that meets your child\u0027s needs.2. 4 breathable vents and aerodynamic design provide cool airflow and reduce sweating while riding3. Come with a lightweight design that won\u0027t burden your child\u0027s head.4. Great for a wide range of activities, including riding, skateboarding, roller skating, inline skating, scootering, longboarding, and more.5. The head circumference adjuster ensures a secure and comfortable fit for your child\u0027s head, giving you peace of mind.Specification:Specifications:Material: PlasticColor: Red/ orange/ white/ green/ blue/ purple (optional)Head Circumference: 52 - 56cm / 20.5 - 22.0in (use 12mm liner); 54 - 58cm / 21.2 - 22.8in (use 8mm liner)Size: 32*18*18cm / 12.6*7.1*7.1inPackage size: 32*20*20 / 12.6*7.9*7.9inPackage weight: 482g / 17oz.Package List:1 x Cycle HelmetNote:1. The helmet is suitable for children aged 5-9.2. Please refer to the information before purchase, measure the size of your child's head, and choose a model of suitable size.3. If you encounter any problems during use, please contact us for processing.